xxIMAGE 100_199\139.Lbm,Mariner 10 snaps this picture of Mercury on September 21, 1974, showing the rugged lunar-like landscape.
xxIMAGE 200_299\228.Lbm,A photomosaic of Mercury, pictured by Mariner 10 on March 29, 1974. It has been artificially tinted to simulate the planet's colour.